408C damper and flywheel question

I bought a rotating assembly from K1 technologies to bump my cubes up to 408 and had them balance it at the factory. A balanced rotating assembly from scat comes with a flywheel and damper. The kit from K1 did not. So now I have to buy a damper (the one of the original motor looks like Noah used it on his Ark somewhere) and possibly a flywheel... If I go down and grab a stock 351C flywheel, will it work on this engine, or will the engine not be balanced then? Same question for the damper.. Will it mess up balancing?

It is probably clear by now that I know nothing about engine balancing, or how its done, or what parts balance it. So confused... and disappointed that I'm now going to have to spend another $600 on a damper and flywheel.. Please help